METHOD FOR DETERMINING A SIZING AGENT CONCENTRATION, PARTICLE SIZE AND A SIZING AGENT PARTICLE SIZE DISTRIBUTION IN A PAPER PULP

摘要

The invention relates to a method for determining a sizing agent concentration, particle size and a distribution of particle sizes of natural or synthetic sizing agents in a paper pulp by colouring the sizing agent particle sample (Ti) with a fluorescent dye, wherein a light is injected to the sample of the fluorescent or fluorescent-coloured particles and a scattered and/or fluorescent light emitted by the sample is absorbed and measured. The inventive method can be used for determining the particle-size distribution of an reactive sizing agent in a paper pulp on in a filtering water of paper machines during paper production.